Lock.



No. 766,665. PATBNTED AUG. 2, 1904. W.'J. CARROLL.

LOCK.

APPLIOATION FILED AUG. 1a, 190s.

NO MODEL.

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NTTED STATES Patented August 2, 1904.

PATENT OEEICE.

VlLSON JOHN CARROLL, OF DENVER, COLORADO, ASSI'GNOR OF ONE- HALF TO NEDA. ALTMAN, OE CRIPPLECREEK, COLORADO.

LOCK.

SPECIFICATION forming part of Letters Patent No. 766,665, dated August2, 1904.

Application filed August 18, 1903. Serial No. 169,938. (No mouehf Toft-Z 1li/mm. 'it ntf/.y concern:

Be it known that 1, VILsoN Jorn.T CARROLL, a citizen ot' the UnitedStates, residing at Denver, in the county ot' Denver and State ot'Colorado, have invented a new and useful Lock, ot' which the followingis a specification.

The present invention relates more particularly to permutation-padlocks;and the object thereof is to provide novel and simple mechanism whichwill securely hold the shackle in locked relation against the attemptsotl a person ignorant of the combination to open the same, saidmechanism having visual and audible indicators, so that it may beoperated in the darkness as well as in the light.

A further object is to provide an automatically-opening shackle and asimple arrangement of parts in connection therewith, whereby, evenshould the mechanism be properly disposed to release the shackle, saidshackle will not open until operated on in a certain manner, thusconcealing the fact to an unauthorized person that the shackle ispractically unlocked.

A still t'urther object is to provide mechanism the diii'erent coactingelements otl which can be slightly changed, so that the various locksconstructed in accordance with the present invention will have di'erentcombinations.

The preferred construction is illustrated in the accompanying drawings,wherein- Figure 1 is a side elevation of a lock constructed inaccordance with the present invention. Fig. 2 is a sectional viewthrough the same, the rear side ot' the casing being removed. Fig. 3 isa similar view showing the loosely-journaled tumblers removed. Fig. 4 isa vertical transverse sectional view through the lock. Fig. 5 is aperspective view showing the tumblers disassociated. Fig. 6 is avertical sectional view through one ot' the tumblers. Fig. 7 is across-sectional view through a portion of the lock, showingl therelation of the cross-bar ot` the latch to the side walls ot' thecasing. Fig. 8 is a detail view showing the shackle unlatched.

Similar reference-numerals indicate corresponding' parts in all thefigures ot' the drawings.

In the embodiment illust-rated a casing 10 is employed, which is ofsubstantially the usual t'orm and is provided with side plates or walls11. A shackle 12 has one end pivoted, as shown at 13, within the upperportion ot' the casing, its other end being reduced to form a nib 14,constructed to pass through an opening 15, formed in the opposite cornerof the casing. The pivoted end of the shackle is provided below thepivot with a notch 16, in which is engaged the looped portion 17 of aspring 18, formed of wire and coiled about the pivot 13, the free ends19 of said spring bearing against the inner wall of the easing. Thisspring tends to throw the shackle to open position, as will be readilyunderstood.

Below the opening 15 and extending' across the casing is a post 20, uponwhich is pivoted a latch 21. This latch extends upwardly, and its treeend is provided with a downwardlyinclined hook or bill 22, adapted toengage in a downwardly -inclined seat or opening 9.3, formed in the nib14 of the shackle. As illustrated particularly in Fig. 7, the latch 21is of less width than the space between the side walls 11 and iscentrally disposed in said space. To prevent the lateral swingingmovement ot' said latch, a cross-bar 21 is employed which is carried byan intermediate portion of the latch and extends across the spacebetween the side walls, said cross-bar being pret'- erably triangular incross-section with one of its edges disposed in rear otl the latch. Thelower end of the latch is provided with a notch 25, in which is engagedthe looped portion 26 of a spring Q7, formed ot' wire and coiled aboutthe post 20, the free ends of said spring bearing against the adjacentportion ot' the casing, and thus urging the latch rearwardly to throwthe hook 9.2 out ot' the seat Q3.

The front casing-wall 11 is provided with a centrally -disposed circularopening 28 and through the saine is passed a spindle 29. A

hub 30, carried by said spindle, lills the opening Q8 and has its outerexposed face provided with an annular scale 31, which coacts with anindicator-line 32, formed on the casingwall, all of which is hereinaftermore fully described. journaled in the rear casing-wall, while its frontend is provided with an operating-knob 33. A tumbler-disk 34 is fixed tothe spindle,

being preferably an integral part of the same, said tumbler-disk beinglocated within the casing in rear of the latch 21 and having aperipheral notch 35, adapted to receive the crossbar 24. This tumbler isfurthermore provided on itsrear side with an annular flange 36, having aseries of notches 37 in its outer edge, said series being located in aportion of the flange only. Other tumbler-disks, 38 and 39, are looselyjournaled upon the spindle 29 in rear of the disk 34, said tumbler-disks38 and 39 each having on one face an annular flange 40, the outer edgesof which constitute bearing-surfaces. These disks are also provided withperipheralnotches 41, which when alined with the notch of the disk 34permits the rearward movement of the cross-bar 24, and consequently thedisengagement of the latch from the shackle. The flange 36 and theflange 40 of the intermediate disk 38 serve as spacing devices for thetumblers. All of said tumblers are provided with coacting teeth or iprojections 42, preferably struck up from the metal and located inintersecting paths of movement, said projections being preferablyarranged inside the flanges.

A post 43 is located at one side of the tumbler mechanism and extendsacross the casing. Coiled upon this post is a click-spring wire 44, oneend 45 of which bears against the edge wall of the casing, the other endbeing formed into a nib 46, that bears against the peripheral edge ofthe flange 36 and engages in the notches 37 to form an audible indicatorfor the mechanism. The lateral displacement of this click-spring isVprevented by the adjacent tumbler. Brake-wires 47 are also coiled uponthe post 43, said wires each having one end 48 bearing against theadjacent portion of the casing-Wall, the other end being looped, asshown at-49, about the flanges 40 and frictionally engaging the same toprevent movement of the loosely-journaled tumblers, eX- cept when theprojections 42 are in engagement and the knob is being revolved.

It is believed that the operation of this lock will be clearly apparentto those skilled in the art. When the shackle is closed and held by thelatch and the notches of the tumblers are out of alinement, said shackleis locked and is so fastened until an operator, knowing the combination,by properly operating the knob 33 brings the notches into alinement withthe cross-bar of the latch. This operation may be accomplished by movingthe knob a predetermined number of marks upon the indicator in oppositedirections or by means of a i predetermined number of clicks of thespringnib 46, which can be clearly heard. When The spindle 29 hasitsrear end.

the alinement of the notches with the crossbar has been obtained, theshackle is still held by theY latch because of the downward inclinationof the hook 22 and seat 23. It therefore becomes necessary to press theshackle inwardly, thus freeing the latch so that the same under theaction of VtheA spring 26 will move rearwardly into the notches. Theshackle will thereuponfly to open position.

It will be apparent that this structure is simple, is easily operated,and by changing the relation of the projections 42 locks may beconstructed which are not duplicates in operation. While three tumblersare perhapssucient for ordinary purposes and are not liable to beaccidentally operated to obtain the release of the shackle, a greater orless number may of course be employed, if desired. The elements,moreover, can be easily and cheaply manufactured. The brakes andclick-springs are formed of wire and attached to a single post. Theyserve to hold the tumblers in fiXedy relation and against accidentalmovement. A further important feature resides in the fact that even ifby continued manipulation the tumblers are properly positioned theshackle will not be entirely released and opened, so that it will beeven more diiiicult for an unauthorized person to actuate the lock.

From the foregoing it is thought that the construction, operation, andmany advantages of the herein-described invention will be apparent tothose skilled in the art without further description, and it will beunderstood that various changes in the size, shape, proportion, andminor details of 'construction may be resorted to without departing fromthe spirit or sacrificing any of the advantages of the invention.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

l. In a lock, the combination with a casing, of a shackle pivotedthereto and having a free end that fits within the casing, 4a latchvpivoted within the casing beneath the free end of the shackle and havinga detachable interlocking engagement therewith, tumblers located at oneside of the latch and normally holding the same in interlocked relationwith the shackle, a spring bearing against the latch to urge the sametoward the tumblers, and a spring for urging the shackle to openposition.

' 2. In a lock, the combination with a casing, of a shackle pivotedthereto and having a free end that tits within the same, said shacklebeing provided in its free end with a downwardly-inclined seat, a latchpivoted at its lower end within the casing beneath the free end of theshackle and having at its Lipper' end an offset downwardly-inclined billthat detachably fits in the seat of the shackle, tumblers located at oneside of the latch and normally holding the same in interlocked relationIOO with the shackle, a spring bearing against the latch to urge thesame toward the tumblers, and a spring for urging the shackle to openposition, said latter spring serving to hold the shackle and latchintel-locked against the action of the latch-spring.

3. 1n a lock, the combination with a casing, ot' a shackle pivotedthereto and having a free end that tits within the casing, a latchpivoted below the free end of the shackle, said latch and shacklehaving' at their free ends downwardly-inclined shoulders that aremovable into and out ot' coacting relation, tumblers coacting with theshackle for maintaining the shoulders in coacting relation, and a springsurrounding the pivot of the latch and bearing against said latch tourge the shoulder of the same out of engagement with the shoulder ot'the shackle.

et. YIn a lock, the combination with a casing, of a shackle pivotedthereto, a latch for locking the shackle, aspindle journaled in thecasing and having an exposed operating-knob, a tumbler-disk secured tothe spindle and eoacting with the latch, said disk havinganotch in itsperiphery, and an outstanding bearinglange provided with a plurality ofnotches, a post located at one side of the tumbler-disk,

a click-spring coiled upon the post and having a tooth that bearsagainst the flange and is movable into the notches, other tumbler-disksrevolubly mounted on the spindle and having' peripheral notches, saiddisks being also provided with outstanding beai'ing-iianges, and brakescomprising spring-Wires coiled upon said post and having looped portionsthat frictionally engage and partially embrace the flanges, saidspring-wires each bearing at one end against the casing.

5. VIn a lock, the combination with a casing, having' spaced side walls,of a latch pivoted Within the casing, said latch being of less Widththan the space between the side Walls, a cross-bar carried by the latchand slidably engaging the inner `faces of the side walls, and rotatabletumblers mounted between the Walls and having notches, which, whenalined, receive the cross-bar to permit the movement of the latch. i

In testimony that l claim the foregoing as my own I have hereto atiixedmy signature in the presence of two witnesses.

VILSON JOHN CARROLL Vitnesses:

HERBERT WV. FIELD, FRANK S. Baars.

